40415545 has 16 divisors (see below), whose sum is σ = 52608528. Its totient is φ = 29685760.

The previous prime is 40415519. The next prime is 40415549. The reversal of 40415545 is 54551404.

It can be written as a sum of positive squares in 8 ways, for example, as 4096 + 40411449 = 64^2 + 6357^2 .

It is not a de Polignac number, because 40415545 - 2¹¹ = 40413497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40415549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314 + ... + 9283.

It is an arithmetic number, because the mean of its divisors is an integer number (3288033).

Almost surely, 2^40415545 is an apocalyptic number.

It is an amenable number.

40415545 is a deficient number, since it is larger than the sum of its proper divisors (12192983).

40415545 is a wasteful number, since it uses less digits than its factorization.

40415545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11660.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 40415545 is about 6357.3221563800. The cubic root of 40415545 is about 343.1753983965.

Adding to 40415545 its reverse (54551404), we get a palindrome (94966949).

The spelling of 40415545 in words is "forty million, four hundred fifteen thousand, five hundred forty-five".